I believe Jose is correct because though the book isn't moving, gravity is still being applied (gravity counts as force)
Explanation:
Hoped this helped
The temperature change is calculated using the combined gas law
that is P1V1/T1 =P2V2/T2
P1= 100KPa
P2=90kpa
v1= 2.50 L
v2= 3.75 L
T1= 303 K
T2=?
T2 is therefore = P2V2T1/P1V1
=( 90 x 3.75 x303)/ (100 x2.50) = 409.05 K
Answer: I mean hey why not
Explanation:
What we can actually do is to find the number of moles of Ca.
moles Ca = 0.72 g / (40.08 g/mol) = 0.018 mol
From the given choices, we can all see that there are 1 mol of compound
per 1 mole of Ca. Therefore the actual moles of compound is also 0.018 mol.
From this, calculate the mass and the answer is the one which will give 2 g.
Answer:
D. CaCl2
Answer:
3.70 × 10³ g
Explanation:
To find the mass of the sample, multiply the volume by the density.
(55.1 cm³) × (6.72 g/cm³) = 3.70 × 10³ g